检索结果-南通市图书馆

Journal of Agricultural Science and Technology(A) 2011年第2X期1卷 149-155页

作者： k. baydar N. k. k.c E. k.fk.s Subtropical Fruits Research and Experimental Center Cukurova University Balcah Adana 01330 Turkey University of Cuk.rova Biotechnology Research and Experimental Center Balcah Adana 01330 Turkey

In this paper, it was aimed to identified and quantified hesperidin and limonin compounds using HPLC （High Performance Liquid Chromatography） techniques against to developing of mal secco disease caused by Phoma tracheiphila. Six citrus lemon varieties （Meyer, k.itdik.n, Enterdonato, Yediveren, Sweet lemon and Eurok.） were infected by P. tracheiphila and artificial inoculation were applied in vivo conditions. Before and after inoculation, leaf, branch and stem samples were tak.n from each lemon varieties. The results show that the amount of hesperidin and limonin concentration was increased after the inoculations at various levels based on the lemon cultivars. Various concentrations （1, 5, 10, 25, 50, 75, 100 ppm） of hesperidin and limonin compounds were also tested under in vitro conditions to compare response of P. tracheiphila development. According to the results, hesperidin and limonin compounds play an important role against to P. tracheiphila development and Sweet Lemon variety was found to be the most resistance both observation and HPLC results.

关键词： HPLC Phoma tracheiphila Citrus limon hesperidin limonin.

A note on generalized Lie derivations of prime rings

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Frontiers of Mathematics in China 2017年第1期12卷 247-260页

作者： Nihan baydar YARBIL Nurcan ARGAC Department of Mathematics Science Faculty Ege University 35100 Bornova Izmir Turkey

Let R be a prime ring of characteristic not 2, A be an additive subgroup of R, and F, T, D, k. A →R be additive maps such that F（[x, y]） = F（x）y - yg（x） - T（y）x ＋ xD（y） for all x, y ∈ A. Our aim is to deal with this functional identity when A is R itself or a noncentral Lie ideal of R. Eventually, we are able to describe the forms of the mappings F, T, D, and k.in case A = R with deg（R）〉 3 and also in the case A is a noncentral Lie ideal and deg（R）〉 9. These enable us in return to characterize the forms of both generalized Lie derivations, D-Lie derivations and Lie centralizers of R under some mild assumptions. Finally, we give a generalization of Lie homomorphisms on Lie ideals.

关键词： Prime ring derivation generalized derivation generalized Lie derivation functional identity generalized polynomial identity

Regression analysis of squeezing-induced hybrid nanofluid flow in Darcy-Forchheimer porous medium

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Applied Mathematics and Mechanics(English Edition) 2025年第1期46卷 193-208页

作者： k.MUHAMMAD M.SARFRAZ Department of Humanities and Sciences School of Electrical Engineering and Computer Science National University of Sciences and Technology Department of Mathematics Quaid-i-Azam University

This article presents a mathematical model addressing a scenario involving a hybrid nanofluid flow between two infinite parallel plates. One plate remains stationary, while the other moves downward at a squeezing velocity. The space between these plates contains a Darcy-Forchheimer porous medium. A mixture of water-based fluid with gold(Au) and silicon dioxide(Si O2) nanoparticles is formulated. In contrast to the conventional Fourier's heat flux equation, this study employs the Cattaneo-Christov heat flux equation. A uniform magnetic field is applied perpendicular to the flow direction, invok.ng magnetohydrodynamic(MHD) effects. Further, the model accounts for Joule heating, which is the heat generated when an electric current passes through the fluid. The problem is solved via NDSolve in MATHEMATICA. Numerical and statistical analyses are conducted to provide insights into the behavior of the nanomaterials between the parallel plates with respect to the flow, energy transport, and sk.n *** findings of this study have potential applications in enhancing cooling systems and optimizing thermal management strategies. It is observed that the squeezing motion generates additional pressure gradients within the fluid, which enhances the flow rate but reduces the frictional drag. Consequently, the fluid is pushed more vigorously between the plates, increasing the flow velocity. As the fluid experiences higher flow rates due to the increased squeezing effect, it spends less time in the region between the plates. The thermal relaxation, however, abruptly changes the temperature, leading to a decrease in the temperature fluctuations.

关键词：

Enhancement of Photocatalytic and Antibacterial Activities of ZnO：Ag Nanopowders Through the Addition of Bamboo Charcoal： An Efficient Natural Adsorbent

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Acta Metallurgica Sinica(English Letters) 2017年第12期30卷 1249-1256页

作者： k. Nithiyadevi k. Ravichandran PG Research and Department of Physics AVVM Sri Pushpam College (Autonomous) Poondi Thanjavur Tamil Nadu 613 503 India Department of Physics Bharathidasan University Constituent College (Women) Orathanadu Tamil Nadu 614 625 India

This research article explains the removal of methylene blue （MB） and malachite green （MG） from aqueous solution using adsorption/photodegradation activity of ZnO：Ag/bamboo charcoal （BC） nanocomposite. In addition, the antibacterial studies of the prepared samples were tested against Staphylococcus aureus （S. aureus） Gram-positive and Escherichia coli （E. coli） Gram-negative bacteria by the well diffusion method. The ZnO：Ag/BC nanocomposite exhibits superior photocatalytic activity compared with ZnO：Ag. Remark.ble degradation efficiencies of 93.95% （MB） and 95.75% （MG） were recorded for ZnO：Ag/BC nanocomposite after 45 min. The degradation process follows a pseudo-first-order k.netics. The rate constant of ZnO：Ag/BC nanocomposite is two times greater than that of pristine ZnO nanopowder for the degradation of MB dye, while for MG dye degradation, it is three times. It is found that the ZnO：Ag/BC nanocomposite shows a higher rate of dye removal due to excellent adsorbing properties of bamboo charcoal （BC）. The ZnO：Ag/BC nanocomposite showed better antibacterial properties compared to ZnO：Ag. In this study, the samples were prepared using a simple and low-cost soft chemical route and they were characterized by optical, structural, surface morphological, antibacterial and photocatalytic properties. These characterization studies substantiate the discussions on the photocatalytic and antibacterial activities of the synthesized samples.

关键词： Bamboo charcoal Adsorbent ZnO Photocatalysis Antibacterial

2022年中国新生儿协作网极早产儿红细胞输注现况分析

在线全文

学校读者我要写书评

暂无评论

中华儿科杂志 2025年第1期63卷 55-61页

作者：莫艳钱爱民白瑞苗李淑涓玉小清王瑾 Lee Shoo k. 蒋思远韦秋芬周文浩国家儿童医学中心复旦大学附属儿科医院新生儿科上海南京医科大学附属儿童医院新生儿医疗中心南京西北妇女儿童医院新生儿科西安广西壮族自治区妇幼保健院新生儿医疗中心南宁加拿大西奈山医院母婴健康研究中心多伦多M5GX 广州市妇女儿童医疗中心新生儿医学中心广州

目的分析2022年中国新生儿协作网(CHNN)各单位极早产儿(出生胎龄<32周)红细胞输注治疗的状况。方法基于CHNN极早产儿队列的横断面研究, 纳入2022年生后24 h内收入CHNN 89家单位的6 985例极早产儿。排除合并严重先天畸形及放弃治疗或转至... 详细信息

目的分析2022年中国新生儿协作网(CHNN)各单位极早产儿(出生胎龄k.usk.l-WallisH检验及Mann-WhitneyU检验等进行组间比较, 采用Cochran-Armitage和Jonck.eere-Terpstra趋势检验进行不同出生胎龄及不同呼吸支持水平间的趋势检验。结果 6 985例极早产儿中男3 865例(55.3%), 出生胎龄为30.0(28.6, 31.0)周, 出生体重为(1 302±321)g。红细胞输注组3 617例(51.8%), 未输注组3 368例(48.2%)。出生胎龄<28、28～31周的极早产儿红细胞输注率分别为77.7%(893/1 150)、46.7%(2 724/5 835)。红细胞输注组极早产儿共接受9 616次红细胞输注, 输注时需有创呼吸支持的有2 459次(25.6%), 无创呼吸支持4 934次(51.3%), 无呼吸支持的有2 223次(23.1%)。因632次红细胞输注输血前血红蛋白未记录, 8 984次红细胞输注纳入分析。红细胞输注组母亲合并妊娠期高血压比例高于未输注组(χ2=10.73, P=0.001), 剖宫产出生、母亲产前激素应用比例均低于未输注组(χ2=12.00、12.93, 均P<0.001);与未输注组相比, 红细胞输注组患儿出生胎龄更小、出生体重更低, 小于胎龄、多胎以及第5分钟Apgar评分≤3分比例均更高, 女性、本院出生以及延迟脐带结扎比例均更低, 入院时生理稳定性转运风险指数评分更高(均P<0.05)。红细胞输注组极早产儿红细胞输注次数为2(1, 3)次, 首次红细胞输注时为18(8, 29)日龄, 首次红细胞输注前血红蛋白为97(86, 109)g/L。红细胞输注时≤7日龄的极早产儿有创呼吸支持、无创呼吸支持和无呼吸支持组接受红细胞输注前的血红蛋白水平差异无统计学意义(H=5.59, P=0.061);8～21以及≥22日龄的极早产儿不同呼吸支持状况下接受红细胞输注前的血红蛋白水平差异均有统计学意义(H=10.91、39.19, 均P<0.01)。8～21日龄、≥22日龄无呼吸支持的极早产儿阈值上红细胞输注分别为90.1%(264/293)、91.1%(1 578/1 732)。阈值上输血组极早产儿相比阈值下输血组发生坏死性小肠结肠炎的比例更高(χ2=10.59, P=0.001), 住院时间更长(Z=4.67, P<0.001)。结论 2022年CHNN纳入的极早产儿红细胞输注率较高, 接受红细胞输注前的血红蛋白水平普遍高于现有证据推荐的输注阈值。

关键词：婴儿, 早产红细胞输注重症监护病房, 新生儿

MINIMAX PROGRAMMING UNDER GENERALIZED （p, r）-INVEXITY

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Systems Science & Complexity 2007年第4期20卷 501-508页

作者： S. k. MISHRA Shouyang WANG k. k. LAI Department of Mathematics Statistics and Computer Science College of Basic Sciences and Humanities G. B. Pant University of Agriculture and Technology Pantnagar-263 145 India Institute of Systems Science Academy of Mathematics and Systems Science Chinese Academy of Sciences Beijing 100080 China Department of Management Sciences City University of Hong Kong 83 Tat Chee Avenue Kowloon Hong Kong China

Minimax programming problems involving generalized （p, r）-invex functions are consid- ered. Parametric sufficient optimality conditions and duality results are established under the aforesaid assumptions on the obje... 详细信息

关键词： Duality minimax programming optimality conditions (p r)-invex functions.

ROLE OF α-PSEUDO-UNIVEX FUNCTIONS IN VECTOR VARIATIONAL-LIk. INEQUALITY PROBLEMS

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Systems Science & Complexity 2007年第3期20卷 344-349页

作者： S. k. MISHRA Shouyang WANG k. k. LAI Department of Mathematics Statistics and Computer Science College of Basic Sciences and Humanities G. B. Pant University of Agriculture and Technology Pantnagar-263 145 India. Institute of Systems Science Academy of Mathematics and Systems Science Chinese Academy of Sciences Beijing 100080 China. Department of Management Sciences City University of Hong Kong 83 Tat Chee Avenue Kowloon Hong Kong China.

In this paper, we introduce a new class of generalized convex function, namely, a-pseudounivex function, by combining the concepts of pseudo-univex and α-invex functions. Further, we establish some relationships between vector variational-lik. inequality problems and vector optimization problems under the assumptions of α-pseudo-univex functions. Results obtained in this paper present a refinement and improvement of previously k.own results.

关键词： α-pseudo-univex functions vector optimization vector variational-lik. inequality problems.

Pre-treatment of rock. prior to comminution--A critical review of present practices

在线全文

学校读者我要写书评

暂无评论

International Journal of Mining Science and Technology 2017年第2期27卷 339-348页

作者： Somani Aditya Nandi Tapas k. Pal Samir k. Majumder Arun k. Department of Mining Engineering Indian Institute of TechnologyKharagpur 721302India Cryogenic Engineering Centre Indian Institute of TechnologyKharagpur 721302India

It has been an established fact that comminution processes, crushing and grinding, are most energy intensive processes which account for more than half of the total energy consumed in mineral *** alternative pre-treatment methods have been tried by experts around the globe. Although these methods yielded positive results in terms of reduction in energy consumption in crushing and particularly, in grinding operations at laboratory scale, their industrial application still remains an unresolved issue and challenge. Present review paper describes each one of these methods along with outcome of earlier studies and issues that need to be addressed through further rigorous experimental *** also suggests the direction in which future studies can be carried out to meet the primary objective of mak.ng comminution processes more energy efficient than today they are.

关键词： Comminution Rock.break.ge Microwave Thermal shock

Effects of P301L-TAU on post-translational modifications of microtubules in human iPSC-derived cortical neurons and TAU transgenic mice

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第8期20卷 2348-2360页

作者： Mohamed Aghyad Al k.bbani Christoph k.hler Hans Zempel Institute of Human Genetics Faculty of Medicine and University Hospital CologneUniversity of CologneCologneGermany Center for Molecular Medicine Cologne(CMMC) University of CologneCologneGermany Center Anatomy Department ⅡMedical FacultyUniversity of CologneCologneGermany

TAU is a microtubule-associated protein that promotes microtubule assembly and stability in the *** is missorted and aggregated in an array of diseases k.own as *** are essential for neuronal function and regulated via a complex set of post-translational modifications,changes of which affect microtubule stability and dynamics,microtubule interaction with other proteins and cellular structures,and mediate recruitment of microtubule-severing *** impairment of microtubule dynamics causes neuronal dysfunction,we hypothesize cognitive impairment in human disease to be impacted by impairment of microtubule *** therefore aimed to study the effects of a disease-causing mutation of TAU(P301L)on the levels and localization of microtubule post-translational modifications indicative of microtubule stability and dynamics,to assess whether P301L-TAU causes stability-changing modifications to *** investigate TAU localization,phosphorylation,and effects on tubulin post-translational modifications,we expressed wild-type or P301L-TAU in human MAPT-k. induced pluripotent stem cell-derived neurons(i Neurons)and studied TAU in neurons in the hippocampus of mice transgenic for human P301L-TAU(p R5 mice).Human neurons expressing the longest TAU isoform(2N4R)with the P301L mutation showed increased TAU phosphorylation at the AT8,but not the p-Ser-262 epitope,and increased polyglutamylation and acetylation of microtubules compared with endogenous TAU-expressing neurons.P301L-TAU showed pronounced somatodendritic presence,but also successful axonal enrichment and a similar axodendritic distribution comparable to exogenously expressed 2N4R-wildtype-TAU.P301L-TAU-expressing hippocampal neurons in transgenic mice showed prominent missorting and tauopathy-typical AT8-phosphorylation of TAU and increased polyglutamylation,but reduced acetylation,of microtubules compared with non-transgenic *** sum,P301L-TAU results in changes in micr

关键词： human induced pluripotent stem cell microtubules P301L pR5 mice TAU tauopathy tubulin code

Flexural response of doubly curved laminated composite shells

在线全文

学校读者我要写书评

暂无评论

Science China(Physics,Mechanics & Astronomy) 2013年第4期56卷 812-817页

作者： SHARMA Ambuj UPADHYAY A. k. SHUk.A k. k. Department of Applied Mechanics MNNIT Allahabad-211004 India

In the present work. analytical solutions for laminated composite doubly curved panels on rectangular plan form undergoing small deformations and subjected to uniformly distributed transverse load have been obtained. The problem is formulated using first order shear deformation theory. The spatial descretization of the linear differential equations is carried out using fast converging finite double Chebyshev series. The effect of panel thick.ess, curvature, boundary conditions, lamination scheme as well as material property on the static response of panel has been investigated in detail.

关键词： doubly curved panel analytical Chebyshev static rectangular plan form